8 results about "Lower Jaw Tooth" patented technology

This invention provides an invisible orthodontic appliance with an oblique guide module, including an upper brace and a lower brace adapted to the upper brace. An oblique guide module is fixedly disposed on the lingual side of one of the upper or lower braces. The tooth side of the oblique guide module has an occlusal surface, which cooperates with the lingual surface of the other brace. By setting the oblique guide module, the occlusal surface is set on the tooth side, and then cooperates with the lingual surface of the corresponding brace for correction. The appliance has minimal foreign body sensation and is comfortable to wear.

A surgical device for intermaxillary fixation that shortens operating time, reduces the risk of lacerations and puncture wounds for the surgeon, and results in lower patient morbidity. It consists of a clamp or clasp made of titanium, surgical steel, or another biocompatible material, the free ends of which are positioned in the interdental space. One end of the clamp is placed in the interdental space of the maxilla and the other end in the interdental space of the mandible, so that once inserted, the clamp secures or fixes the maxilla to the mandible, preventing the patient from moving or opening it, thus achieving the goal of intermaxillary fixation. This clamp or device is operated and manipulated using forceps for easy application and removal from the teeth.

This utility model provides an orthodontic appliance with an integrally molded deep flat guide, including a maxillary brace and a mandibular brace adapted to the maxillary brace. An integral flat guide module is fixed to the lingual side of multiple anterior teeth of the maxillary brace. The width direction of the flat guide module extends along the palatal part of the anterior teeth. The flat guide module is integrally molded with the maxillary brace. By integrally molding the integral flat guide module, it extends from the palatal part of the anterior teeth to form a deep and long structure that has stable contact with the opposing anterior teeth.

This invention relates to the field of dental restoration technology and discloses a method for fabricating a 3D-printed resin filling guide. In clinical practice, the affected tooth is prepared and color matched. Three-dimensional data of the patient's upper and lower jaw dentition and the prepared abutment tooth data are obtained through digital oral scanning, along with the occlusal relationship. The abutment tooth data includes the abutment tooth size, axial direction, and gingival margin morphology. The 3D-printed resin filling guide fabrication method provided by this invention, utilizing digital design and 3D printing technology, creates a resin filling guide that meets the patient's personalized needs. This fundamentally overcomes many drawbacks of existing dental resin restoration techniques, achieving precision, personalization, and minimally invasive dental resin restoration, while improving clinical operational efficiency and patient satisfaction with aesthetic treatment.

This invention relates to the field of oral medicine technology, and particularly to a method and system for automatic full-mouth tooth arrangement based on occlusal plane feature points. The method involves acquiring dental model information, scanning and automatically arranging teeth from both the upper and lower jaws, further acquiring the centroid coordinates of each tooth, the first limiting distance for each tooth, the feature points on each tooth surface, and the set allowed movement direction; pairing the upper and lower jaw teeth; aligning the z-axis of the centroid coordinates of each tooth pair; performing coarse registration of the tooth pairs based on the first limiting distance and the allowed movement direction; and completing fine registration of the upper and lower jaw teeth by constructing an objective function based on the point cloud data of the two teeth in the tooth pair. An objective function is also constructed based on the alveolar ridge crest line and the minimum distance between two adjacent teeth in the same jaw to optimize tooth arrangement. This invention prioritizes perfect occlusion of tooth pairs while optimizing tooth arrangement, improving the aesthetics and neatness of the tooth arrangement result.

This invention provides an occlusal guiding appliance for the mixed dentition period, an orthodontic system for guiding jawbone growth during the mixed dentition period, and a design method thereof. The occlusal guiding appliance for the mixed dentition period includes: a maxillary brace; a mandibular brace; and an intermaxillary connector located between the occlusal surfaces of the maxillary and mandibular braces in the posterior region. The maxillary and mandibular braces form a rigid, immovable integral structure at the occlusal surfaces via the intermaxillary connector. The intermaxillary connector has a preset thickness to open the occlusal contact between the upper and lower anterior teeth when worn, and is configured to lock the mandibular brace at a preset three-dimensional spatial position relative to the maxillary brace body. This allows the occlusal guiding appliance for the mixed dentition period to use the upper and lower dentitions as an integral interactive anchor when worn, converting occlusal force into orthodontic force acting on the dentition or jawbone.

A device for orally collecting multiple biomarkers of a subject includes one or more plates composed of a thermoplastic or other impression material that softens at a temperature of about 150 deg F. and hardens to complete rigidity at temperatures below about 100 deg F. The plates are shaped to fit in the subject's mouth and receive bite impressions of the teeth in the upper and / or lower jaw. The plates extend out of the mouth and provide a gripping portion that the subject pinches to create fingerprint impressions on the softened plates. A rigid body provides a mounting portion for the plates and a handle portion for a person other than the subject to hold while the samples are being collected. Roughened structures, protrusions, or grooves may be formed in the plates and body in areas that contact the subject's inner cheek surfaces, collecting and retaining saliva and skin cells.

The application discloses a dental system, comprising two aligners corresponding to an Nth aligning step and an N+Mth aligning step, N and M are positive integers, each aligner comprises a jaw plate structure connecting upper and lower jaws, the jaw plate structure comprises a first part corresponding to upper teeth and a second part corresponding to lower teeth, when the jaw plate structure connects the upper and lower jaws, the first part and the second part abut each other to form an abutment surface, the two jaw plate structures corresponding to the two aligners have different parameters, the different parameters are configured to generate different forces and / or different moments when the jaw plate structures connect the upper and lower jaws. The different parameters of the application can make the two aligners generate different forces and / or different moments, and the different forces and / or different moments can meet the aligning requirements of different aligning steps.